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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<link href="css/style.css" rel="stylesheet" type="text/css" />
<!--   引入jQuery -->
<script src="../scripts/jquery-1.3.1.js" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
$(function(){
		//如果是必填的，则加红星标识.
		$("form :input.required").each(function(){
			var $required = $("<strong class='high'> *</strong>"); //创建元素
			$(this).parent().append($required); //然后将它追加到文档中
		});
		 //文本框失去焦点后
		$('form :input').blur(function(){  // 为表单元素添加失去焦点事件
			 var $parent = $(this).parent();
			 //验证用户名
			 if( $(this).is('#username') ){
					if( this.value=="" || this.value.length	< 6	){
						var errorMsg = '请输入至少6位的用户名.';
						$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
					}else{
						var okMsg =	'输入正确.';
						$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
					}
			 }
			 //验证邮件
			 if( $(this).is('#email') ){
				if( this.value=="" || ( this.value!="" && !/.+@.+\.[a-zA-Z]{2,4}$/.test(this.value) ) ){
					  var errorMsg = '请输入正确的E-Mail地址.';
					  $parent.append('<span class="formtips onError">'+errorMsg+'</span>');
				}else{
					  var okMsg = '输入正确.';
					  $parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
				}
			 }
		})
})
//]]>
</script>
</head>
<body>

<form method="post" action="">
	<div class="int">
		<label for="username">用户名:</label>
		<input type="text" id="username" class="required" />
	</div>
	<div class="int">
		<label for="email">邮箱:</label>
		<input type="text" id="email" class="required" />
	</div>
	<div class="int">
		<label for="personinfo">个人资料:</label>
		<input type="text" id="personinfo" />
	</div>
	<div class="sub">
		<input type="submit" value="提交" id="send"/><input type="reset" id="res"/>
	</div>
</form>

</body>
</html>